html,
body {
    touch-action: manipulation;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
    overscroll-behavior: none;
}

#sparkle-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: auto;
    z-index: 1000;
    touch-action: manipulation;
}

/* Nền sao */
.sparkle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: white;
    border-radius: 50%;
    animation: sparkle-blink 2s infinite ease-in-out;
}

@keyframes sparkle-blink {
    0%,
    100% {
        opacity: 0.3;
        transform: scale(0.8);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

/* Sao băng */
.shooting-star {
    position: absolute;
    width: var(--shooting-star-length, 100px);
    height: 2px;
    background: linear-gradient(90deg, white, transparent);
    top: var(--start-y, 0px);
    left: var(--start-x, 0px);
    transform: rotate(var(--angle, 45deg));
    animation: shoot-trajectory var(--shooting-star-duration, 3s) linear
        forwards;
}

@keyframes shoot-trajectory {
    0% {
        top: var(--start-y);
        left: var(--start-x);
        opacity: 1;
    }
    100% {
        top: var(--end-y);
        left: var(--end-x);
        opacity: 0;
    }
}

#btn-make {
    bottom: 200px;
    right: 30px;
    background-color: rgba(0, 0, 0, 0.3);
}
.div_btn {
    position: fixed;
    cursor: pointer;
    width: 55px;
    height: 55px;
    border: 3px solid #fff;
    border-radius: 50%;
    font-size: 2em;
    line-height: 58px;
    text-align: center;
    z-index: 999;
}
#div_support {
    bottom: 80px;
    right: 20px;
    background-color: rgba(0, 0, 0, 0.3);
}
body {
    background: #000;
    height: 100vh;
    overflow: hidden;
}

#ui .love {
    position: absolute;
    top: 50%;
    left: 50%;
    margin: -225px 0 0 -225px;
}
#ui .love:last-child .love_word {
    color: #fff;
    font-size: 2rem;
    text-shadow: 0 0 10px #ea80b0;
}
#ui .love_word {
    color: #ea80b0;
    font-size: 1.4rem;
    transform: translateY(-100%) rotateZ(-30deg);
    font-family: "Dosis", sans-serif;
    text-shadow: 0 0 10px #fff;
    letter-spacing: 2px;
}
#ui .love_horizontal {
    animation: horizontal 10000ms infinite alternate ease-in-out;
}
#ui .love_vertical {
    animation: vertical 20000ms infinite linear;
}
#ui .love:nth-child(1) .love_horizontal {
    animation-delay: -300ms;
}
#ui .love:nth-child(1) .love_vertical {
    animation-delay: -300ms;
}
#ui .love:nth-child(2) .love_horizontal {
    animation-delay: -600ms;
}
#ui .love:nth-child(2) .love_vertical {
    animation-delay: -600ms;
}
#ui .love:nth-child(3) .love_horizontal {
    animation-delay: -900ms;
}
#ui .love:nth-child(3) .love_vertical {
    animation-delay: -900ms;
}
#ui .love:nth-child(4) .love_horizontal {
    animation-delay: -1200ms;
}
#ui .love:nth-child(4) .love_vertical {
    animation-delay: -1200ms;
}
#ui .love:nth-child(5) .love_horizontal {
    animation-delay: -1500ms;
}
#ui .love:nth-child(5) .love_vertical {
    animation-delay: -1500ms;
}
#ui .love:nth-child(6) .love_horizontal {
    animation-delay: -1800ms;
}
#ui .love:nth-child(6) .love_vertical {
    animation-delay: -1800ms;
}
#ui .love:nth-child(7) .love_horizontal {
    animation-delay: -2100ms;
}
#ui .love:nth-child(7) .love_vertical {
    animation-delay: -2100ms;
}
#ui .love:nth-child(8) .love_horizontal {
    animation-delay: -2400ms;
}
#ui .love:nth-child(8) .love_vertical {
    animation-delay: -2400ms;
}
#ui .love:nth-child(9) .love_horizontal {
    animation-delay: -2700ms;
}
#ui .love:nth-child(9) .love_vertical {
    animation-delay: -2700ms;
}
#ui .love:nth-child(10) .love_horizontal {
    animation-delay: -3000ms;
}
#ui .love:nth-child(10) .love_vertical {
    animation-delay: -3000ms;
}
#ui .love:nth-child(11) .love_horizontal {
    animation-delay: -3300ms;
}
#ui .love:nth-child(11) .love_vertical {
    animation-delay: -3300ms;
}
#ui .love:nth-child(12) .love_horizontal {
    animation-delay: -3600ms;
}
#ui .love:nth-child(12) .love_vertical {
    animation-delay: -3600ms;
}
#ui .love:nth-child(13) .love_horizontal {
    animation-delay: -3900ms;
}
#ui .love:nth-child(13) .love_vertical {
    animation-delay: -3900ms;
}
#ui .love:nth-child(14) .love_horizontal {
    animation-delay: -4200ms;
}
#ui .love:nth-child(14) .love_vertical {
    animation-delay: -4200ms;
}
#ui .love:nth-child(15) .love_horizontal {
    animation-delay: -4500ms;
}
#ui .love:nth-child(15) .love_vertical {
    animation-delay: -4500ms;
}
#ui .love:nth-child(16) .love_horizontal {
    animation-delay: -4800ms;
}
#ui .love:nth-child(16) .love_vertical {
    animation-delay: -4800ms;
}
#ui .love:nth-child(17) .love_horizontal {
    animation-delay: -5100ms;
}
#ui .love:nth-child(17) .love_vertical {
    animation-delay: -5100ms;
}
#ui .love:nth-child(18) .love_horizontal {
    animation-delay: -5400ms;
}
#ui .love:nth-child(18) .love_vertical {
    animation-delay: -5400ms;
}
#ui .love:nth-child(19) .love_horizontal {
    animation-delay: -5700ms;
}
#ui .love:nth-child(19) .love_vertical {
    animation-delay: -5700ms;
}
#ui .love:nth-child(20) .love_horizontal {
    animation-delay: -6000ms;
}
#ui .love:nth-child(20) .love_vertical {
    animation-delay: -6000ms;
}
#ui .love:nth-child(21) .love_horizontal {
    animation-delay: -6300ms;
}
#ui .love:nth-child(21) .love_vertical {
    animation-delay: -6300ms;
}
#ui .love:nth-child(22) .love_horizontal {
    animation-delay: -6600ms;
}
#ui .love:nth-child(22) .love_vertical {
    animation-delay: -6600ms;
}
#ui .love:nth-child(23) .love_horizontal {
    animation-delay: -6900ms;
}
#ui .love:nth-child(23) .love_vertical {
    animation-delay: -6900ms;
}
#ui .love:nth-child(24) .love_horizontal {
    animation-delay: -7200ms;
}
#ui .love:nth-child(24) .love_vertical {
    animation-delay: -7200ms;
}
#ui .love:nth-child(25) .love_horizontal {
    animation-delay: -7500ms;
}
#ui .love:nth-child(25) .love_vertical {
    animation-delay: -7500ms;
}
#ui .love:nth-child(26) .love_horizontal {
    animation-delay: -7800ms;
}
#ui .love:nth-child(26) .love_vertical {
    animation-delay: -7800ms;
}
#ui .love:nth-child(27) .love_horizontal {
    animation-delay: -8100ms;
}
#ui .love:nth-child(27) .love_vertical {
    animation-delay: -8100ms;
}
#ui .love:nth-child(28) .love_horizontal {
    animation-delay: -8400ms;
}
#ui .love:nth-child(28) .love_vertical {
    animation-delay: -8400ms;
}
#ui .love:nth-child(29) .love_horizontal {
    animation-delay: -8700ms;
}
#ui .love:nth-child(29) .love_vertical {
    animation-delay: -8700ms;
}
#ui .love:nth-child(30) .love_horizontal {
    animation-delay: -9000ms;
}
#ui .love:nth-child(30) .love_vertical {
    animation-delay: -9000ms;
}
#ui .love:nth-child(31) .love_horizontal {
    animation-delay: -9300ms;
}
#ui .love:nth-child(31) .love_vertical {
    animation-delay: -9300ms;
}
#ui .love:nth-child(32) .love_horizontal {
    animation-delay: -9600ms;
}
#ui .love:nth-child(32) .love_vertical {
    animation-delay: -9600ms;
}
#ui .love:nth-child(33) .love_horizontal {
    animation-delay: -9900ms;
}
#ui .love:nth-child(33) .love_vertical {
    animation-delay: -9900ms;
}
#ui .love:nth-child(34) .love_horizontal {
    animation-delay: -10200ms;
}
#ui .love:nth-child(34) .love_vertical {
    animation-delay: -10200ms;
}
#ui .love:nth-child(35) .love_horizontal {
    animation-delay: -10500ms;
}
#ui .love:nth-child(35) .love_vertical {
    animation-delay: -10500ms;
}
#ui .love:nth-child(36) .love_horizontal {
    animation-delay: -10800ms;
}
#ui .love:nth-child(36) .love_vertical {
    animation-delay: -10800ms;
}
#ui .love:nth-child(37) .love_horizontal {
    animation-delay: -11100ms;
}
#ui .love:nth-child(37) .love_vertical {
    animation-delay: -11100ms;
}
#ui .love:nth-child(38) .love_horizontal {
    animation-delay: -11400ms;
}
#ui .love:nth-child(38) .love_vertical {
    animation-delay: -11400ms;
}
#ui .love:nth-child(39) .love_horizontal {
    animation-delay: -11700ms;
}
#ui .love:nth-child(39) .love_vertical {
    animation-delay: -11700ms;
}
#ui .love:nth-child(40) .love_horizontal {
    animation-delay: -12000ms;
}
#ui .love:nth-child(40) .love_vertical {
    animation-delay: -12000ms;
}
#ui .love:nth-child(41) .love_horizontal {
    animation-delay: -12300ms;
}
#ui .love:nth-child(41) .love_vertical {
    animation-delay: -12300ms;
}
#ui .love:nth-child(42) .love_horizontal {
    animation-delay: -12600ms;
}
#ui .love:nth-child(42) .love_vertical {
    animation-delay: -12600ms;
}
#ui .love:nth-child(43) .love_horizontal {
    animation-delay: -12900ms;
}
#ui .love:nth-child(43) .love_vertical {
    animation-delay: -12900ms;
}
#ui .love:nth-child(44) .love_horizontal {
    animation-delay: -13200ms;
}
#ui .love:nth-child(44) .love_vertical {
    animation-delay: -13200ms;
}
#ui .love:nth-child(45) .love_horizontal {
    animation-delay: -13500ms;
}
#ui .love:nth-child(45) .love_vertical {
    animation-delay: -13500ms;
}
#ui .love:nth-child(46) .love_horizontal {
    animation-delay: -13800ms;
}
#ui .love:nth-child(46) .love_vertical {
    animation-delay: -13800ms;
}
#ui .love:nth-child(47) .love_horizontal {
    animation-delay: -14100ms;
}
#ui .love:nth-child(47) .love_vertical {
    animation-delay: -14100ms;
}
#ui .love:nth-child(48) .love_horizontal {
    animation-delay: -14400ms;
}
#ui .love:nth-child(48) .love_vertical {
    animation-delay: -14400ms;
}
#ui .love:nth-child(49) .love_horizontal {
    animation-delay: -14700ms;
}
#ui .love:nth-child(49) .love_vertical {
    animation-delay: -14700ms;
}
#ui .love:nth-child(50) .love_horizontal {
    animation-delay: -15000ms;
}
#ui .love:nth-child(50) .love_vertical {
    animation-delay: -15000ms;
}
#ui .love:nth-child(51) .love_horizontal {
    animation-delay: -15300ms;
}
#ui .love:nth-child(51) .love_vertical {
    animation-delay: -15300ms;
}
#ui .love:nth-child(52) .love_horizontal {
    animation-delay: -15600ms;
}
#ui .love:nth-child(52) .love_vertical {
    animation-delay: -15600ms;
}
#ui .love:nth-child(53) .love_horizontal {
    animation-delay: -15900ms;
}
#ui .love:nth-child(53) .love_vertical {
    animation-delay: -15900ms;
}
#ui .love:nth-child(54) .love_horizontal {
    animation-delay: -16200ms;
}
#ui .love:nth-child(54) .love_vertical {
    animation-delay: -16200ms;
}
#ui .love:nth-child(55) .love_horizontal {
    animation-delay: -16500ms;
}
#ui .love:nth-child(55) .love_vertical {
    animation-delay: -16500ms;
}
#ui .love:nth-child(56) .love_horizontal {
    animation-delay: -16800ms;
}
#ui .love:nth-child(56) .love_vertical {
    animation-delay: -16800ms;
}
#ui .love:nth-child(57) .love_horizontal {
    animation-delay: -17100ms;
}
#ui .love:nth-child(57) .love_vertical {
    animation-delay: -17100ms;
}
#ui .love:nth-child(58) .love_horizontal {
    animation-delay: -17400ms;
}
#ui .love:nth-child(58) .love_vertical {
    animation-delay: -17400ms;
}
#ui .love:nth-child(59) .love_horizontal {
    animation-delay: -17700ms;
}
#ui .love:nth-child(59) .love_vertical {
    animation-delay: -17700ms;
}
#ui .love:nth-child(60) .love_horizontal {
    animation-delay: -18000ms;
}
#ui .love:nth-child(60) .love_vertical {
    animation-delay: -18000ms;
}
#ui .love:nth-child(61) .love_horizontal {
    animation-delay: -18300ms;
}
#ui .love:nth-child(61) .love_vertical {
    animation-delay: -18300ms;
}
#ui .love:nth-child(62) .love_horizontal {
    animation-delay: -18600ms;
}
#ui .love:nth-child(62) .love_vertical {
    animation-delay: -18600ms;
}
#ui .love:nth-child(63) .love_horizontal {
    animation-delay: -18900ms;
}
#ui .love:nth-child(63) .love_vertical {
    animation-delay: -18900ms;
}
#ui .love:nth-child(64) .love_horizontal {
    animation-delay: -19200ms;
}
#ui .love:nth-child(64) .love_vertical {
    animation-delay: -19200ms;
}
#ui .love:nth-child(65) .love_horizontal {
    animation-delay: -19500ms;
}
#ui .love:nth-child(65) .love_vertical {
    animation-delay: -19500ms;
}
#ui .love:nth-child(66) .love_horizontal {
    animation-delay: -19800ms;
}
#ui .love:nth-child(66) .love_vertical {
    animation-delay: -19800ms;
}
#ui .love:nth-child(67) .love_horizontal {
    animation-delay: -20100ms;
}
#ui .love:nth-child(67) .love_vertical {
    animation-delay: -20100ms;
}
#ui .love:nth-child(68) .love_horizontal {
    animation-delay: -20400ms;
}
#ui .love:nth-child(68) .love_vertical {
    animation-delay: -20400ms;
}
#ui .love:nth-child(69) .love_horizontal {
    animation-delay: -20700ms;
}
#ui .love:nth-child(69) .love_vertical {
    animation-delay: -20700ms;
}
#ui .love:nth-child(70) .love_horizontal {
    animation-delay: -21000ms;
}
#ui .love:nth-child(70) .love_vertical {
    animation-delay: -21000ms;
}
#ui .love:nth-child(71) .love_horizontal {
    animation-delay: -21300ms;
}
#ui .love:nth-child(71) .love_vertical {
    animation-delay: -21300ms;
}
#ui .love:nth-child(72) .love_horizontal {
    animation-delay: -21600ms;
}
#ui .love:nth-child(72) .love_vertical {
    animation-delay: -21600ms;
}
#ui .love:nth-child(73) .love_horizontal {
    animation-delay: -21900ms;
}
#ui .love:nth-child(73) .love_vertical {
    animation-delay: -21900ms;
}
#ui .love:nth-child(74) .love_horizontal {
    animation-delay: -22200ms;
}
#ui .love:nth-child(74) .love_vertical {
    animation-delay: -22200ms;
}
#ui .love:nth-child(75) .love_horizontal {
    animation-delay: -22500ms;
}
#ui .love:nth-child(75) .love_vertical {
    animation-delay: -22500ms;
}
#ui .love:nth-child(76) .love_horizontal {
    animation-delay: -22800ms;
}
#ui .love:nth-child(76) .love_vertical {
    animation-delay: -22800ms;
}
#ui .love:nth-child(77) .love_horizontal {
    animation-delay: -23100ms;
}
#ui .love:nth-child(77) .love_vertical {
    animation-delay: -23100ms;
}
#ui .love:nth-child(78) .love_horizontal {
    animation-delay: -23400ms;
}
#ui .love:nth-child(78) .love_vertical {
    animation-delay: -23400ms;
}
#ui .love:nth-child(79) .love_horizontal {
    animation-delay: -23700ms;
}
#ui .love:nth-child(79) .love_vertical {
    animation-delay: -23700ms;
}
#ui .love:nth-child(80) .love_horizontal {
    animation-delay: -24000ms;
}
#ui .love:nth-child(80) .love_vertical {
    animation-delay: -24000ms;
}
#ui .love:nth-child(81) .love_horizontal {
    animation-delay: -24300ms;
}
#ui .love:nth-child(81) .love_vertical {
    animation-delay: -24300ms;
}
#ui .love:nth-child(82) .love_horizontal {
    animation-delay: -24600ms;
}
#ui .love:nth-child(82) .love_vertical {
    animation-delay: -24600ms;
}
#ui .love:nth-child(83) .love_horizontal {
    animation-delay: -24900ms;
}
#ui .love:nth-child(83) .love_vertical {
    animation-delay: -24900ms;
}
#ui .love:nth-child(84) .love_horizontal {
    animation-delay: -25200ms;
}
#ui .love:nth-child(84) .love_vertical {
    animation-delay: -25200ms;
}
#ui .love:nth-child(85) .love_horizontal {
    animation-delay: -25500ms;
}
#ui .love:nth-child(85) .love_vertical {
    animation-delay: -25500ms;
}
#ui .love:nth-child(86) .love_horizontal {
    animation-delay: -25800ms;
}
#ui .love:nth-child(86) .love_vertical {
    animation-delay: -25800ms;
}
#ui .love:nth-child(87) .love_horizontal {
    animation-delay: -26100ms;
}
#ui .love:nth-child(87) .love_vertical {
    animation-delay: -26100ms;
}
#ui .love:nth-child(88) .love_horizontal {
    animation-delay: -26400ms;
}
#ui .love:nth-child(88) .love_vertical {
    animation-delay: -26400ms;
}
#ui .love:nth-child(89) .love_horizontal {
    animation-delay: -26700ms;
}
#ui .love:nth-child(89) .love_vertical {
    animation-delay: -26700ms;
}
#ui .love:nth-child(90) .love_horizontal {
    animation-delay: -27000ms;
}
#ui .love:nth-child(90) .love_vertical {
    animation-delay: -27000ms;
}
#ui .love:nth-child(91) .love_horizontal {
    animation-delay: -27300ms;
}
#ui .love:nth-child(91) .love_vertical {
    animation-delay: -27300ms;
}
#ui .love:nth-child(92) .love_horizontal {
    animation-delay: -27600ms;
}
#ui .love:nth-child(92) .love_vertical {
    animation-delay: -27600ms;
}
#ui .love:nth-child(93) .love_horizontal {
    animation-delay: -27900ms;
}
#ui .love:nth-child(93) .love_vertical {
    animation-delay: -27900ms;
}
#ui .love:nth-child(94) .love_horizontal {
    animation-delay: -28200ms;
}
#ui .love:nth-child(94) .love_vertical {
    animation-delay: -28200ms;
}
#ui .love:nth-child(95) .love_horizontal {
    animation-delay: -28500ms;
}
#ui .love:nth-child(95) .love_vertical {
    animation-delay: -28500ms;
}
#ui .love:nth-child(96) .love_horizontal {
    animation-delay: -28800ms;
}
#ui .love:nth-child(96) .love_vertical {
    animation-delay: -28800ms;
}
#ui .love:nth-child(97) .love_horizontal {
    animation-delay: -29100ms;
}
#ui .love:nth-child(97) .love_vertical {
    animation-delay: -29100ms;
}
#ui .love:nth-child(98) .love_horizontal {
    animation-delay: -29400ms;
}
#ui .love:nth-child(98) .love_vertical {
    animation-delay: -29400ms;
}
#ui .love:nth-child(99) .love_horizontal {
    animation-delay: -29700ms;
}
#ui .love:nth-child(99) .love_vertical {
    animation-delay: -29700ms;
}
#ui .love:nth-child(100) .love_horizontal {
    animation-delay: -30000ms;
}
#ui .love:nth-child(100) .love_vertical {
    animation-delay: -30000ms;
}

@keyframes horizontal {
    from {
        transform: translateX(0px);
    }
    to {
        transform: translateX(450px);
    }
}
@keyframes vertical {
    0% {
        transform: translateY(180px);
    }
    10% {
        transform: translateY(45px);
    }
    15% {
        transform: translateY(4.5px);
    }
    18% {
        transform: translateY(0px);
    }
    20% {
        transform: translateY(4.5px);
    }
    22% {
        transform: translateY(34.61538px);
    }
    24% {
        transform: translateY(64.28571px);
    }
    25% {
        transform: translateY(112.5px);
    }
    26% {
        transform: translateY(64.28571px);
    }
    28% {
        transform: translateY(34.61538px);
    }
    30% {
        transform: translateY(4.5px);
    }
    32% {
        transform: translateY(0px);
    }
    35% {
        transform: translateY(4.5px);
    }
    40% {
        transform: translateY(45px);
    }
    50% {
        transform: translateY(180px);
    }
    71% {
        transform: translateY(428.57143px);
    }
    72.5% {
        transform: translateY(441.17647px);
    }
    75% {
        transform: translateY(450px);
    }
    77.5% {
        transform: translateY(441.17647px);
    }
    79% {
        transform: translateY(428.57143px);
    }
    100% {
        transform: translateY(180px);
    }
}

.falling-image {
    position: absolute;
    width: 78vw; /* Tăng kích thước ảnh */
    height: 90vw; /* Giữ tỷ lệ tương tự */
    object-fit: cover;
    border-radius: 8px;
    z-index: 1000;
}

.falling-heart {
    position: absolute;
    font-size: 40px;
    color: #ff4d4d;
    z-index: 1000;
    font-weight: bold;
    pointer-events: none;
}

/* Điều chỉnh kích thước cho màn hình desktop */
@media screen and (min-width: 768px) {
    .falling-image {
        width: 200px;
        height: 260px;
    }
    .falling-heart {
        font-size: 50px;
    }
}

@keyframes fall {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(var(--fall-distance));
    }
}

.click-text {
    position: absolute;
    font-size: 40px;
    z-index: 1000;
    text-shadow: 0 0 6px #ffb6c1;
    pointer-events: none;
    animation: fadeInOut 8s ease-out forwards;
    text-align: center;
    font-weight: bold;
    padding: 4px 10px;
    border-radius: 8px;
    background: var(--gradient-color);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

@keyframes fadeInOut {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.8);
    }
    20% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    80% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    100% {
        opacity: 0;
        transform: translateY(-20px) scale(0.8);
    }
}

.petal {
    position: absolute;
    pointer-events: none;
    z-index: 999;
    width: 15px;
    height: 15px;
    background: linear-gradient(45deg, #ff4d4d, #ff8533);
    border-radius: 150% 0 150% 0;
    animation: petalFall 3s linear forwards;
}

@keyframes petalFall {
    0% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translate(var(--fall-x), var(--fall-y)) rotate(360deg);
        opacity: 0;
    }
}